Lighting supporting arm



FIG. 1 is a front view of the lighting supporting arm of the invention;

FIG. 2 is a top plan view of the lighting supporting arm of the invention;

FIG. 3 is a bottom plan view of the lighting supporting arm of the invention;

FIG. 4 is a left side view of the lighting supporting arm of the invention;

FIG. 5 is a right side view of the lighting supporting arm of the invention;

FIG. 6 is a top perspective view of the lighting supporting arm of the invention; and,

FIG. 7 is a rear view of the lighting supporting arm of the invention.

Surface shading is provided to show the character and/or contour of the surfaces represented. 

CLAIM I claim the ornamental design of a lighting supporting arm, as shown and described. 